package cn.yz.util;

import jakarta.annotation.PostConstruct;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * Redis工具类
 */
@Slf4j
@Component
public class RedisUtil {

    static {
        System.out.println("RedisUtil类已加载");
    }

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;



    @Autowired
    public RedisUtil(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
        printRedisConfig();
    }

    /**
     * 打印RedisTemplate相关配置信息
     */
    public void printRedisConfig() {
        if (redisTemplate == null) {
            log.warn("redisTemplate is null");
            return;
        }
        try {
            log.info("RedisTemplate class: {}", redisTemplate.getClass().getName());

            var connectionFactory = redisTemplate.getConnectionFactory();
            if (connectionFactory != null) {
                log.info("RedisConnectionFactory class: {}", connectionFactory.getClass().getName());

                if (connectionFactory instanceof LettuceConnectionFactory lettuceFactory) {
                    String host = lettuceFactory.getHostName();
                    int port = lettuceFactory.getPort();
                    log.info("Redis连接地址: {}:{}", host, port);

                    String password = lettuceFactory.getPassword();
                    if (password != null && !password.isEmpty()) {
                        log.info("Redis连接密码已设置");
                    } else {
                        log.info("Redis连接无密码");
                    }

                    int database = lettuceFactory.getDatabase();
                    log.info("Redis数据库索引: {}", database);
                }
            } else {
                log.warn("RedisConnectionFactory is null");
            }

            log.info("KeySerializer: {}", redisTemplate.getKeySerializer());
            log.info("ValueSerializer: {}", redisTemplate.getValueSerializer());
            log.info("HashKeySerializer: {}", redisTemplate.getHashKeySerializer());
            log.info("HashValueSerializer: {}", redisTemplate.getHashValueSerializer());

        } catch (Exception e) {
            log.error("打印Redis配置异常", e);
        }
    }


    // =============================common============================

    /**
     * 指定缓存失效时间
     */
    public boolean expire(String key, long time) {
        try {
            if (time > 0) {
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            log.error("设置缓存失效时间失败，key: {}, time: {}", key, time, e);
            return false;
        }
    }

    /**
     * 根据key 获取过期时间
     */
    public long getExpire(String key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }

    /**
     * 判断key是否存在
     */
    public boolean hasKey(String key) {
        try {
            return Boolean.TRUE.equals(redisTemplate.hasKey(key));
        } catch (Exception e) {
            log.error("判断key是否存在失败，key: {}", key, e);
            return false;
        }
    }

    /**
     * 删除缓存
     */
    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                redisTemplate.delete(key[0]);
            } else {
                redisTemplate.delete((Collection<String>) List.of(key));
            }
        }
    }

    // ============================String=============================

    /**
     * 普通缓存获取
     */
    public Object get(String key) {
        return key == null ? null : redisTemplate.opsForValue().get(key);
    }

    /**
     * 普通缓存放入
     */
    public boolean set(String key, Object value) {
        try {
            redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            log.error("设置缓存失败，key: {}, value: {}", key, value, e);
            return false;
        }
    }

    /**
     * 普通缓存放入并设置时间
     */
    public boolean set(String key, Object value, long time) {
        try {
            if (time > 0) {
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            } else {
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            log.error("设置缓存失败，key: {}, value: {}, time: {}", key, value, time, e);
            return false;
        }
    }

    /**
     * 递增
     */
    public long incr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递增因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, delta);
    }

    /**
     * 递减
     */
    public long decr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递减因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, -delta);
    }

    // ================================Map=================================

    /**
     * HashGet
     */
    public Object hget(String key, String item) {
        return redisTemplate.opsForHash().get(key, item);
    }

    /**
     * 获取hashKey对应的所有键值
     */
    public Map<Object, Object> hmget(String key) {
        return redisTemplate.opsForHash().entries(key);
    }

    /**
     * HashSet
     */
    public boolean hmset(String key, Map<String, Object> map) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            return true;
        } catch (Exception e) {
            log.error("设置Hash缓存失败，key: {}, map: {}", key, map, e);
            return false;
        }
    }

    /**
     * HashSet 并设置时间
     */
    public boolean hmset(String key, Map<String, Object> map, long time) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("设置Hash缓存失败，key: {}, map: {}, time: {}", key, map, time, e);
            return false;
        }
    }

    /**
     * 向一张hash表中放入数据,如果不存在将创建
     */
    public boolean hset(String key, String item, Object value) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            return true;
        } catch (Exception e) {
            log.error("设置Hash缓存失败，key: {}, item: {}, value: {}", key, item, value, e);
            return false;
        }
    }

    /**
     * 向一张hash表中放入数据,如果不存在将创建
     */
    public boolean hset(String key, String item, Object value, long time) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("设置Hash缓存失败，key: {}, item: {}, value: {}, time: {}", key, item, value, time, e);
            return false;
        }
    }

    /**
     * 删除hash表中的值
     */
    public void hdel(String key, Object... item) {
        redisTemplate.opsForHash().delete(key, item);
    }

    /**
     * 判断hash表中是否有该项的值
     */
    public boolean hHasKey(String key, String item) {
        return redisTemplate.opsForHash().hasKey(key, item);
    }

    /**
     * hash递增 如果不存在,就会创建一个 并把新增后的值返回
     */
    public double hincr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, by);
    }

    /**
     * hash递减
     */
    public double hdecr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, -by);
    }

    // ============================set=============================

    /**
     * 根据key获取Set中的所有值
     */
    public Set<Object> sGet(String key) {
        try {
            return redisTemplate.opsForSet().members(key);
        } catch (Exception e) {
            log.error("获取Set缓存失败，key: {}", key, e);
            return null;
        }
    }

    /**
     * 根据value从一个set中查询,是否存在
     */
    public boolean sHasKey(String key, Object value) {
        try {
            return Boolean.TRUE.equals(redisTemplate.opsForSet().isMember(key, value));
        } catch (Exception e) {
            log.error("判断Set缓存是否存在失败，key: {}, value: {}", key, value, e);
            return false;
        }
    }

    /**
     * 将数据放入set缓存
     */
    public long sSet(String key, Object... values) {
        try {
            return redisTemplate.opsForSet().add(key, values);
        } catch (Exception e) {
            log.error("设置Set缓存失败，key: {}, values: {}", key, values, e);
            return 0;
        }
    }

    /**
     * 将set数据放入缓存
     */
    public long sSetAndTime(String key, long time, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().add(key, values);
            if (time > 0) {
                expire(key, time);
            }
            return count;
        } catch (Exception e) {
            log.error("设置Set缓存失败，key: {}, time: {}, values: {}", key, time, values, e);
            return 0;
        }
    }

    /**
     * 获取set缓存的长度
     */
    public long sGetSetSize(String key) {
        try {
            return redisTemplate.opsForSet().size(key);
        } catch (Exception e) {
            log.error("获取Set缓存长度失败，key: {}", key, e);
            return 0;
        }
    }

    /**
     * 移除值为value的
     */
    public long setRemove(String key, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().remove(key, values);
            return count;
        } catch (Exception e) {
            log.error("移除Set缓存失败，key: {}, values: {}", key, values, e);
            return 0;
        }
    }

    // ===============================list=================================

    /**
     * 获取list缓存的内容
     */
    public List<Object> lGet(String key, long start, long end) {
        try {
            return redisTemplate.opsForList().range(key, start, end);
        } catch (Exception e) {
            log.error("获取List缓存失败，key: {}, start: {}, end: {}", key, start, end, e);
            return null;
        }
    }

    /**
     * 获取list缓存的长度
     */
    public long lGetListSize(String key) {
        try {
            return redisTemplate.opsForList().size(key);
        } catch (Exception e) {
            log.error("获取List缓存长度失败，key: {}", key, e);
            return 0;
        }
    }

    /**
     * 通过索引 获取list中的值
     */
    public Object lGetIndex(String key, long index) {
        try {
            return redisTemplate.opsForList().index(key, index);
        } catch (Exception e) {
            log.error("获取List缓存索引失败，key: {}, index: {}", key, index, e);
            return null;
        }
    }

    /**
     * 将list放入缓存
     */
    public boolean lSet(String key, Object value) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            return true;
        } catch (Exception e) {
            log.error("设置List缓存失败，key: {}, value: {}", key, value, e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     */
    public boolean lSet(String key, Object value, long time) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("设置List缓存失败，key: {}, value: {}, time: {}", key, value, time, e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     */
    public boolean lSet(String key, List<Object> value) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value);
            return true;
        } catch (Exception e) {
            log.error("设置List缓存失败，key: {}, value: {}", key, value, e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     */
    public boolean lSet(String key, List<Object> value, long time) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("设置List缓存失败，key: {}, value: {}, time: {}", key, value, time, e);
            return false;
        }
    }

    /**
     * 根据索引修改list中的某条数据
     */
    public boolean lUpdateIndex(String key, long index, Object value) {
        try {
            redisTemplate.opsForList().set(key, index, value);
            return true;
        } catch (Exception e) {
            log.error("更新List缓存失败，key: {}, index: {}, value: {}", key, index, value, e);
            return false;
        }
    }

    /**
     * 移除N个值为value
     */
    public long lRemove(String key, long count, Object value) {
        try {
            Long remove = redisTemplate.opsForList().remove(key, count, value);
            return remove;
        } catch (Exception e) {
            log.error("移除List缓存失败，key: {}, count: {}, value: {}", key, count, value, e);
            return 0;
        }
    }
} 